guages on an aluminum dash

[Ferd/289]

I am getting a short circuit since my guages are mounted on aluminum. There is continuity from guage encasements to the dash so blown fuse. I need to isolate the guages, or mount them differently in some way not to cause a short.

I can mount them on wood but would rather not. Anyone mount guages on metal and able to isolate them from the metal dash. Here are some pics;

 

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[buZy]

Sweet dash work!

[Six_Shooter]

You have some other problem.

 

The gauges can be and have been installed directly into aluminium or other metals without issue.

 

Double check your wiring and routing.

[Ferd/289]

thats what I was thinking. I have seen many guages on metal.

I wired the guages in parallel ie the power wire goes from one guage to another. Then the ground wire goes from one guage to another ( ie shared). Also, the last guage on the dash powers the fuel pressure guage on the engine.

I have the main battery supply to a fuse box(15 amp), and then supply wire from the fuse box to the guages, as I said above in parallel, and guages share the common ground wire. 15 amp fuse is what is blowing which should be plenty of amp protection. I am stumped but will recheck wiring again.

Somehow I am getting this short soon as I turn ignition on. Without dash electrically connected, I can crank engine without problem therefore ignition wiring is ok. I will recheck but wonder if my wiring design itself is bad.

Ferd

[woldson]

Measure the ohms of all those gauges wired like that.

 

Also grounding all to the mount area might help, you might have a ground loop going on.

 

Try disconneting the grounds and let the mount do the grounding for you?